Muskies spawn ng in the Okoboji canals

Here's a video of Muskies spawning in the canals at Okoboji. I missed the roughest part. and look how the marks are in it at the end.
Interesting how they went in circles head to vent.
I'm sure releasing eggs and milt and then it was all over and the big female left.
I always thought they swam side by side releasing but this tells me they stir the spawn themselves.
https://www.youtube.com/watch?v=jlRXVxJsgGU